顿时觉得神清气爽!! #include <iostream> #include <math.h> #define eps 1e-8 #define zero(x) (((x)>0?(x):-(x))<eps) #define pi acos(-1.0) struct point { double x,y; }; struct line { point a,b; }; struct point3 { double x,y,z; }; struct line3 { poin…

#include <stdlib.h> #include <math.h> #include <iostream> #define MAXN 1000 #define offset 10000 #define eps 1e-8 #define zero(x) (((x)>0?(x):-(x))<eps) #define _sign(x) ((x)>eps?1:((x)<-eps?2:0)) struct point{ double x, y; }…

矩形重叠 看过某司一道笔试题:给\(n\)个矩形左下和右上坐标(不能斜放),求重叠最多处矩形个数. 这道题本身不难:可以遍历所有矩形边界组成的点,计算该点被多少矩形包围,从而选出最大值. 由此引申出一个问题:判断两个矩形重叠. 如果正向思考,会有很多种情况:包含.重叠某个角.交叉... 那么如果逆向思考:什么情况两个矩形不重叠?无非就是\(A(p_1, p_2)\)在\(B(p_3, p_4)\)的上下左右: \[(p_2.y>=p_3.y)\vee(p_4.y>=p_1.y)\vee(p_3…

1 Introduction The goal of the circular kernel is to offer to the user a large set of functionalities on circles and circular arcs in the plane. All the choices (interface, robustness, representation, and so on) made here are consistent with the choi…

1 Introduction CGAL, the Computational Geometry Algorithms Library, is written in C++ and consists of three major parts. The first part is the kernel, which consists of constant-size non-modifiable geometric primitive objects and operations on these…

#include <boost/assign.hpp> #include <boost/geometry/core/point_type.hpp> #include <boost/geometry/geometry.hpp> #include <boost/geometry/geometries/point_xy.hpp> #include <boost/geometry/geometries/linestring.hpp> #include &…

c++程序员必知的几个库 1.C++各大有名库的介绍——C++标准库 2.C++各大有名库的介绍——准标准库Boost 3.C++各大有名库的介绍——GUI 4.C++各大有名库的介绍——网络通信 5.C++各大有名库的介绍——XML 6.C++各大有名库的介绍——科学计算 7.C++各大有名库的介绍——游戏开发 8.C++各大有名库的介绍——线程 9.C++各大有名库的介绍——序列化 10.C++各大有名库的介绍——字符串 11.C++各大有名库的介绍——综合 12.C++各大有名库的介绍——…

Java基础常见英语词汇(共70个) ['ɔbdʒekt] ['ɔ:rientid]导向的                             ['prəʊɡræmɪŋ]编程 OO: object-oriented ,面向对象 OOP: object-oriented programming,面向对象编程 [dɪ'veləpmənt][kɪt]工具箱                              ['vɜːtjʊəl]虚拟的 JDK:Java development kit, j…

Computer Graphics Research Software Helping you avoid re-inventing the wheel since 2009! Last updated December 5, 2012.Try searching this page for keywords like 'segmentation' or 'PLY'.If you would like to contribute links, please e-mail them to rms@…

c++资源之不完全导引 (转) 转:http://www.cnblogs.com/suiyingjie/archive/2008/02/24/1079411.html 本文2004年5月首发于<CSDN开发高手>,版权归该杂志与<程序员>杂志社所有.杂志限于篇幅部分内容有所删节,此处版本为相对完整版本. .本文为介绍性文章,会随笔者学习C++语言不断更新. -------------------------------- 无数次听到“我要开始学习C++!”的呐喊,无数次听到“C++…